Routing in the Data centre

[carl_townshend]

Hi All

What are the most popular routing protocols to use in the data centre these days for when doing Spine Leaf?

Do most people use OSPF in the underlay and then BGP for VXLAN etc?

Also, if you were to connect a campus network to the DC, does this normally come off the leaf switches? would you connect it to a few of the leafs and use ECMP to get the bandwidth etc?

Cheers

[balaji.bandi]

ACI uses ISIS internall, overall now most DC going BGP. there is inter-operability with OSPF, if you have Campus running with OSPF. / EIGRP.

[carl_townshend]

If using BGP, what about the underlay, i.e what are people using to advertise the loopbacks?

cheers